Cisco Cisco IOS Software Release 15.0(1)SE Notas de publicación

The switch does not correctly detect a loopback when the switch port on an authenticated IP phone 
is looped to a port configured and authenticated with dot1x security, even when bpduguard is 
configured on the interface. This situation can result in 100 percent CPU utilization and degraded 
switch performance. 

The workaround is to configure the interface with the authentication open command or to 
configure authentication mac-move permit on the switch.

CSCty88456

The Catalyst 4500E series switch with Supervisor Engine 7L-E contains a denial of service (DoS) 
vulnerability when processing specially crafted packets that can cause a reload of the device.

Cisco has released free software updates that address this vulnerability. 

Workarounds that mitigate this vulnerability are not available.

This advisory is available at the following link: 

CSCue23882

If a new port is added to an etherchannel on a switch using DAI or IPDT, ARP packets that ingress 
the port are lost.

The workaround is to save the configuration and reload the switch. Alternatively, configure the 
switch by entering the no macro auto monitor command followed by the macro auto monitor 
command after the port is bundled for the first time.

User documentation in HTML format includes the latest documentation updates and might be more 
current than the complete book PDF available on Cisco.com.

with complete information about the switch are available from these Cisco.com sites:

Catalyst 3750-X

Catalyst 3560-X

Catalyst 3750-E

http://www.cisco.com/en/US/products/ps7077/tsd_products_support_series_home.html

Catalyst 3560-E

These documents provide complete information about the switches: